Mycological Progress (2010) 9, 305-308

Murat Seyran, Claudia Nischwitz, Kippy J. Lewis, Ronald D. Gitaitis, Timothy B. Brenneman and Katherine L. Stevenson (2010)
Phylogeny of the pecan scab fungus Fusicladium effusum G. Winter based on the cytochrome b gene sequence
Mycological Progress 9 (2), 305-308
Abstract: Pecan scab, caused by the fungus Fusicladium effusum, is the most devastating disease of pecan (Carya illinoinensis) trees and is responsible for the majority of disease management efforts applied to that crop. The taxonomy of the fungus changed several times in the last decade and most recently, using ITS nrDNA data and conventional taxonomic methods, the organism was renamed F. effusum. In our study, a conserved region of the mitochondrial cytochrome b gene was sequenced from three isolates of F. effusum. The obtained sequences showed 95% nucleic acid and 100% amino acid homology (201-266 amino acids on exon 5 of the cytochrome b gene) with Venturia inaequalis (NCBI GenBank accession number AF047029). And in the maximum parsimony tree based on nucleotide sequences, F. effusum and V. inaequalis were clustered, with a 92% bootstrap value. The taxonomic classification of the pecan scab fungus was supported based on the cytochrome b region.
Link to article at publishers website
Database assignments for author(s): Claudia Nischwitz

Research topic(s) for pests/diseases/weeds:
identification/taxonomy
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Venturia effusa